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<- back THE BASIC PRINCIPLES OF USING ZINC-TITANIUM SHEETS Working of the zinc-titanium sheets Using different metals The placement of sheets Joining of sheets Soldering Lateral joints Longitudinal joints Placement of the fixed and movable fasteners Ventilation of the roof I. Working of the zinc-titanium sheets. The great plasticity of zinc-titanium sheets allows all kinds of treatment with only one provision: the temperature of the material must not drop below +10oC. At the lower temperature the processed edges should be heated. The minimum bending radius is 2 mm. II. Using different metals. The elements made of different metals should not touch each other as this might lead to the contact corrosion or other adverse reactions. In the presence of the electrolyte (rain water, moisture contained in construction materials) there is a danger of electrochemical corrosion (creation of galvanic cells). Joining of metals   Al Pb Cu Stainles steel Galvanized steel Zn + + - + + The copper ions contained in the flowing water might cause the surface corrosion of the zinc-titanium sheet. For this reason this material must not be used under the copper elements. III. The placement of sheets. The best base for the zinc-titanium sheets consists of wooden boards 20..40 mm thick and 80..140 mm wide making full planking. The zinc-titanium sheets may not be directly placed on the tar paper, plywood or boards impregnated with wood-protection agents containing salt, because such materials release acid compounds that may damage the sheets. As a material forming ventilating layer under the sheets and protecting against harmful the Enkamat 7008 polyamide mat should be used. next ->